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pg_connection_status

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

pg_connection_status Gibt den Verbindungsstatus zurück

Beschreibung

pg_connection_status(PgSql\Connection $connection): int

pg_connection_status() gibt den Status der angegebenen connection zurück.

Parameter-Liste

connection

Eine PgSql\Connection-Instanz.

Changelog

Version Beschreibung
8.1.0 Der Parameter connection erwartet nun eine PgSql\Connection-Instanz; vorher wurde eine Ressource erwartet.

Beispiele

Beispiel #1 pg_connection_status() Beispiel

<?php
$dbconn
= pg_connect("dbname=publisher") or die("Konnte keine Verbindung aufbauen");
$stat = pg_connection_status($dbconn);
if (
$stat === PGSQL_CONNECTION_OK) {
echo
'Verbindungsstatus ok';
} else {
echo
'Verbindungsstatus bad';
}
?>

Siehe auch

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User Contributed Notes 4 notes

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6
Mathieu De Zutter
17 years ago
Being careful with the comparison operators is not enough:

<?php
if (pg_connection_status($link)===PGSQL_CONNECTION_BAD)
reconnect($link);
?>

The reconnect won't be trigged when $link is null.

The manual is just wrong, there are three return values: PGSQL_CONNECTION_OK, PGSQL_CONNECTION_BAD, null
up
2
zytox at hotmail dot com
19 years ago
If the connection variable is NULL this function returns 0 in PHP 5.0.2. Havent figured out any more erratic values for the connection variable but be careful.
up
2
david dot tulloh at infaze dot com dot au
19 years ago
I think zytox is incorrect, at least in PHP 5.0.4.
It returns null, but you have to be careful with your comparison operators.

As an example:
<?php
unset($null);
if (
pg_connection_status($null)===PGSQL_CONNECTION_OK)
echo
'this is not called';
if (
pg_connection_status($null)==PGSQL_CONNECTION_OK)
echo
'this is called because NULL==0 is true';
?>
up
-1
Anonymous
6 years ago
The wiki page doesn't currently reflect that, but if you're passing PGSQL_CONNECT_ASYNC to pg_connect, creating the connection won't block and transitions through extra states expressed by those constants.

PGSQL_CONNECTION_AUTH_OK
PGSQL_CONNECTION_AWAITING_RESPONSE
PGSQL_CONNECTION_MADE
PGSQL_CONNECTION_SETENV
PGSQL_CONNECTION_SSL_STARTUP
PGSQL_CONNECTION_STARTED
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